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Parabolic wave equation approximations in heterogenous media,
KTH, School of Computer Science and Communication (CSC), Numerical Analysis, NA.
1988 (English)In: SIAM Journal on Applied Mathematics, ISSN 0036-1399, E-ISSN 1095-712X, Vol. 48, 99-128 p.Article in journal (Refereed) Published
Abstract [en]

The properties of different variants of parabolic approximations of scalar wave equations are analyzed. These equations are of general form which includes those used in seismology, underwater acoustics and other applications. A new version of the parabolic approximation is derived for heterogeneous media. It has optimal properties with respect to wave reflection at material interfaces. The amplitud of the reflected and transmitted waves depend continuously on the interface. Existence, uniqueness and energy estimates are proved.

Place, publisher, year, edition, pages
1988. Vol. 48, 99-128 p.
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-90506OAI: diva2:505747
NR 20140805Available from: 2012-02-24 Created: 2012-02-24Bibliographically approved

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Engquist, Björn
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ReferencesLink to record
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